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Siemens 3RW5244-6TC05 — Soft Starters

Siemens 3RW5244-6TC05 SIRIUS Soft Starter, 100 A, 200-600 V

MPN3RW5244-6TC05
Active

Siemens SIRIUS 3RW5244-6TC05 soft starter, 100 A minimum, rated voltage 200-600 V, Trip Class 10A (default), with PROFIBUS, Modbus TCP, EtherNet/IP, and PROFINET communication.

Siemens 3RW5244-6TC05 datasheet (PDF)
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Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RW5244-6TC05 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5244-6TC05 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)132 kW
Rated motor power at 230 V (40 °C)75 kW
Rated operational current at 40 °C433 A
Rated operational current at 50 °C381 A
Rated operational current at 60 °C346 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)3 188 W

Control & Connection

3RW5244-6TC05 — Control & Connection
ParameterValue
Control supply voltage typeAC/DC
Rated voltage at 50 Hz24 V
Rated voltage at 60 Hz24 V
Main circuit terminal typebusbar connection
Control circuit wire range, solid1x (0.5 ... 4.0 mm²), 2x (0.5 ... 2.5 mm²)
Control circuit wire range, finely stranded (with ferrule)1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)
Analog outputNo
Auxiliary contact rated current, AC-15 at 250 V3 A
Auxiliary contact rating (UL)R300-B300
Control supply voltage tolerance, AC 50 Hz (max.)20 %
Control supply voltage tolerance, AC 50 Hz (min.)-20 %
Control supply voltage tolerance, AC 60 Hz (max.)20 %
Control supply voltage tolerance, AC 60 Hz (min.)-20 %
Control supply frequency tolerance (max.)10 %
Control supply frequency tolerance (min.)-10 %
Operating frequency tolerance (max.)10 %
Operating frequency tolerance (min.)-10 %
Operating voltage tolerance, inside-delta (max.)10 %
Operating voltage tolerance, inside-delta (min.)-15 %

Protection & Features

3RW5244-6TC05 — Protection & Features
ParameterValue
Motor overload protectionYes; Full motor protection (thermistor motor protection and electronic motor overload protection)
Thermistor motor protectionYes; Type A PTC or Klixon / Thermoclick
Adjustable current limitationYes
Inside-delta connectionYes
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2

Mechanical

3RW5244-6TC05 — Mechanical
ParameterValue
Height393 mm
Width210 mm
Depth203 mm
Weight9.9 kg
Mounting positionwith vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back
Fastening methodscrew fixing
Mounting clearance, top100 mm
Mounting clearance, bottom75 mm
Mounting clearance, side5 mm
Mounting clearance, front10 mm

Environmental

3RW5244-6TC05 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C; Please observe derating at temperatures of 40 °C or above
Storage / transport temperature range-40 ... +80 °C
Max. installation altitude5 000 m; Derating as of 1000 m, see catalog
Ambient class during operation (IEC 60721)3K6 (no ice formation, only occasional condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6
Ambient class during transport (IEC 60721)2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)

Specifications

3RW5244-6TC05 — Specifications
ParameterValue
Trip ClassCLASS 10A (default) / 10E / 20E; acc. to IEC 60947-4-2
Number Of Controlled Phases3
Utilization category according to IEC 60947-4-2AC 53a
Product Feature Integrated Bypass Contact SystemYes
Start-Up Ramp Time Of Soft Starter0 ... 20 s

Electrical

3RW5244-6TC05 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

100 A minimum, Trip Class 10A — motor protection across the start cycle

The Siemens 3RW5244-6TC05 SIRIUS soft starter is rated for a minimum motor current of 100 A and a rated voltage range of 200 to 600 V. Its default Trip Class 10A (per IEC 60947-4-2) means it will trip within 10 seconds at 7.2× rated current — matching the acceleration profile of standard induction motors driving pumps, fans, and conveyors without nuisance tripping. The unit also accepts Class 10E and 20E settings for longer ramp times or higher-inertia loads.

Multi-protocol fieldbus — PROFIBUS, Modbus TCP, EtherNet/IP, PROFINET

This soft starter integrates directly into modern automation architectures with onboard support for PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET. The PROFINET interface also carries PROFIenergy capability for coordinated energy management during idle phases. No separate gateway module is required for these protocols — the communication interface is built into the unit, reducing panel wiring and commissioning steps.

Mounting and environmental — screw-fixed, rotatable, derated above 40 °C

Mounting is by screw fixing on a vertical surface, with the unit rotatable ±90° and tiltable ±22.5° front-to-back for tight enclosure layouts. Clearance requirements: 100 mm upward, 75 mm downward, 10 mm forward, 5 mm at the sides, 0 mm backward. Shock resistance is 15 g / 11 ms (12 g / 11 ms with potential contact lifting).

Frequently asked questions

What is the price of 3RW5244-6TC05 soft starter?

Buyers need current pricing to budget and compare suppliers.

Where can I buy 3RW5244-6TC05 with stock available?

Sourcing buyers need immediate availability to avoid delays in production.

Is 3RW5244-6TC05 obsolete or active lifecycle?

Engineers and buyers need to know if the part is still supported for new designs or if an alternative is needed.

What is the equivalent or alternative to Siemens 3RW5244-6TC05?

When the exact part is not available, a cross reference helps find a suitable replacement.

What are the full specifications of 3RW5244-6TC05 including dimensions and voltage?

Design engineers need to verify fit and compatibility with their motor control panel.

Can 3RW5244-6TC05 be used for a 100A motor application?

Engineers want to know if this soft starter can handle lower current motors or if it needs to be derated.

MPN
3RW5244-6TC05